package models

import (
	"errors"
	"fmt"
	"reflect"
	"strings"
	"time"

	"github.com/astaxie/beego/orm"
	"gitee.com/lzqysoft/ims/libs"
	"github.com/astaxie/beego"
)

type ImsProfessorGroup struct {
	Id       string       `orm:"column(id);pk"`
	Type     int       `orm:"column(type);null"`
	Seq      int       `orm:"column(seq);null"`
	Remark   string    `orm:"column(remark);null"`
	Status   int       `orm:"column(status);null"`
	Isdelete int       `orm:"column(isdelete);null"`
	Ctime    time.Time `orm:"column(ctime);type(timestamp with time zone);null"`
	Creater  string    `orm:"column(creater);null"`
	CId      string    `orm:"column(c_id);null"`
	Utime    time.Time `orm:"column(utime);type(timestamp with time zone);null"`
	Updater  string    `orm:"column(updater);null"`
	UId      string    `orm:"column(u_id);null"`
	OrgId    string    `orm:"column(org_id);null"`
	DeptId   string    `orm:"column(dept_id);null"`
	Name     string    `orm:"column(name);null"`
	OrgName  string    `orm:"column(org_name);null"`
	DeptName string    `orm:"column(dept_name);null"`
}

func (t *ImsProfessorGroup) TableName() string {
	return "ims_professor_group"
}

func init() {
	orm.RegisterModel(new(ImsProfessorGroup))
}

// AddImsProfessorGroup insert a new ImsProfessorGroup into database and returns
// last inserted Id on success.
func AddImsProfessorGroup(m *ImsProfessorGroup) (id int64, err error) {
	o := orm.NewOrm()
	id, err = o.Insert(m)
	return
}

// GetImsProfessorGroupById retrieves ImsProfessorGroup by Id. Returns error if
// Id doesn't exist
func GetImsProfessorGroupById(id string) (v *ImsProfessorGroup, err error) {
	o := orm.NewOrm()
	v = &ImsProfessorGroup{Id: id}
	if err = o.Read(v); err == nil {
		return v, nil
	}
	return nil, err
}

// GetAllImsProfessorGroup retrieves all ImsProfessorGroup matches certain condition. Returns empty list if
// no records exist
func GetAllImsProfessorGroup(query map[string]string, fields []string, sortby []string, order []string,
	offset int64, limit int64) (ml []interface{}, err error) {
	o := orm.NewOrm()
	qs := o.QueryTable(new(ImsProfessorGroup))
	// query k=v
	for k, v := range query {
		// rewrite dot-notation to Object__Attribute
		k = strings.Replace(k, ".", "__", -1)
		if strings.Contains(k, "isnull") {
			qs = qs.Filter(k, (v == "true" || v == "1"))
		} else {
			qs = qs.Filter(k, v)
		}
	}
	// order by:
	var sortFields []string
	if len(sortby) != 0 {
		if len(sortby) == len(order) {
			// 1) for each sort field, there is an associated order
			for i, v := range sortby {
				orderby := ""
				if order[i] == "desc" {
					orderby = "-" + v
				} else if order[i] == "asc" {
					orderby = v
				} else {
					return nil, errors.New("Error: Invalid order. Must be either [asc|desc]")
				}
				sortFields = append(sortFields, orderby)
			}
			qs = qs.OrderBy(sortFields...)
		} else if len(sortby) != len(order) && len(order) == 1 {
			// 2) there is exactly one order, all the sorted fields will be sorted by this order
			for _, v := range sortby {
				orderby := ""
				if order[0] == "desc" {
					orderby = "-" + v
				} else if order[0] == "asc" {
					orderby = v
				} else {
					return nil, errors.New("Error: Invalid order. Must be either [asc|desc]")
				}
				sortFields = append(sortFields, orderby)
			}
		} else if len(sortby) != len(order) && len(order) != 1 {
			return nil, errors.New("Error: 'sortby', 'order' sizes mismatch or 'order' size is not 1")
		}
	} else {
		if len(order) != 0 {
			return nil, errors.New("Error: unused 'order' fields")
		}
	}

	var l []ImsProfessorGroup
	qs = qs.OrderBy(sortFields...)
	if _, err = qs.Limit(limit, offset).All(&l, fields...); err == nil {
		if len(fields) == 0 {
			for _, v := range l {
				ml = append(ml, v)
			}
		} else {
			// trim unused fields
			for _, v := range l {
				m := make(map[string]interface{})
				val := reflect.ValueOf(v)
				for _, fname := range fields {
					m[fname] = val.FieldByName(fname).Interface()
				}
				ml = append(ml, m)
			}
		}
		return ml, nil
	}
	return nil, err
}

// UpdateImsProfessorGroup updates ImsProfessorGroup by Id and returns error if
// the record to be updated doesn't exist
func UpdateImsProfessorGroupById(m *ImsProfessorGroup) (err error) {
	o := orm.NewOrm()
	v := ImsProfessorGroup{Id: m.Id}
	// ascertain id exists in the database
	if err = o.Read(&v); err == nil {
		var num int64
		if num, err = o.Update(m); err == nil {
			fmt.Println("Number of records updated in database:", num)
		}
	}
	return
}

// DeleteImsProfessorGroup deletes ImsProfessorGroup by Id and returns error if
// the record to be deleted doesn't exist
func DeleteImsProfessorGroup(id string) (err error) {
	o := orm.NewOrm()
	v := ImsProfessorGroup{Id: id}
	// ascertain id exists in the database
	if err = o.Read(&v); err == nil {
		var num int64
		if num, err = o.Delete(&ImsProfessorGroup{Id: id}); err == nil {
			fmt.Println("Number of records deleted in database:", num)
		}
	}
	return
}

func NewImsProfessorGroup() *ImsProfessorGroup{
	return &ImsProfessorGroup{
		Id: libs.UUID(),
		Status: 1,
		Isdelete: 0,
		Ctime: time.Now(),
		Utime: time.Now(),
	}
}

func GetImsProfessorGroupByDept(deptId string) ([]ImsProfessorGroup, error) {
	o := orm.NewOrm()
	var l []ImsProfessorGroup
	_, err := o.QueryTable(new(ImsProfessorGroup)).Filter("Isdelete", 0).Filter("Status", 1).Filter("DeptId", deptId).
		All(&l)
	return l, err
}

// 软删除 ImsProfessorGroupByDept
func SoftDeleteImsProfessorGroupByDept(l []ImsProfessorGroup, user *User) error {
	if len(l) == 0 {
		return nil
	}
	o := orm.NewOrm()
	o.Begin()
	var ids []string
	for _, v := range l {
		ids = append(ids, v.Id)
	}
	if _, err := o.QueryTable(new(ImsProfessorGroup)).Filter("Id__in", ids).Update(orm.Params{
		"Status": 0,
		"Isdelete": 1,
		"Utime": time.Now(),
		"UId": user.Id,
		"Updater": user.Abbr,
	}); err != nil {
		o.Rollback()
		return err
	}
	return o.Commit()
}

func QueryUserByImsProfessorGroup(groupId string) ([]UserTmp, error)  {
	sql := `
SELECT t0."id", t0.abbr FROM sys_user t0 LEFT JOIN ims_professor_group_sys_user t1
ON t0."id" = t1.user_id
WHERE t1.professor_group_id = ?
`
	var l []UserTmp
	o := orm.NewOrm()
	_, err := o.Raw(sql, groupId).QueryRows(&l)
	return l, err
}

func UpdateProfessorGroupMember(groupId string, idArray []string) error  {
	o := orm.NewOrm()
	o.Begin()
	// 删除原有关系
	if _, err := o.QueryTable(new(ImsProfessorGroupSysUser)).
		Filter("ProfessorId", groupId).Delete(); err != nil {
			beego.Debug(err)
			o.Rollback()
			return err
	}
	// 添加新的关系
	//qs := o.QueryTable(new(ImsProfessorGroupSysUser))
	//i, _ := qs.PrepareInsert()
	for _, userId := range idArray {
		rel := NewImsProfessorGroupSysUser()
		rel.UserId = userId
		rel.ProfessorId = groupId
		_, err := o.Insert(rel)
		if err != nil {
			beego.Debug(err)
			o.Rollback()
			return err
			//break
		}
	}

	//i.Close()
	return o.Commit()
}

func SetLeader(userId, groupId string) error {
	o := orm.NewOrm()
	o.Begin()
	if _, err := o.QueryTable(new(ImsProfessorGroupSysUser)).Filter("professor_group_id", groupId).Update(orm.Params{
		"is_leader": false,
	}); err != nil {
		o.Rollback()
		return  err
	}
	if _, err := o.QueryTable(new(ImsProfessorGroupSysUser)).Filter("professor_group_id", groupId).Filter("user_id", userId).
		Update(orm.Params{
		"is_leader": true,
	}); err != nil {
		o.Rollback()
		return  err
	}
	return o.Commit()
}